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Hardware for digitally controlled scanned probe microscopes

Clark, S. M. and Baselt, D. R. and Spence, C. F. and Youngquist, M. G. and Baldeschwieler, J. D. (1992) Hardware for digitally controlled scanned probe microscopes. Review of Scientific Instruments, 63 (10). pp. 4296-4307. ISSN 0034-6748. http://resolver.caltech.edu/CaltechAUTHORS:CLArsi92

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Abstract

The design and implementation of a flexible and modular digital control and data acquisition system for scanned probe microscopes (SPMs) is presented. The measured performance of the system shows it to be capable of 14-bit data acquisition at a 100-kHz rate and a full 18-bit output resolution resulting in less than 0.02-Å rms position noise while maintaining a scan range in excess of 1 µm in both the X and Y dimensions. This level of performance achieves the goal of making the noise of the microscope control system an insignificant factor for most experiments. The adaptation of the system to various types of SPM experiments is discussed. Advances in audio electronics and digital signal processors have made the construction of such high performance systems possible at low cost.


Item Type:Article
Additional Information:Copyright © 1992 American Institute of Physics. Received 18 March 1992; accepted 23 June 1992. The authors would like to thank Jean-Paul Revel for a critical reading of the manuscript. Financial support for this work was provided by Abbott Laboratories, Inc., the National Institutes of Health Training Grant GM07617 (S.M.C.), the Ford Motor Company, and a National Science Foundation Fellowship (D.R.B.). The authors will gladly supply more detailed documentation to interested readers.
Subject Keywords:COMPUTERIZED CONTROL SYSTEMS, DIGITAL SYSTEMS, DESIGN, OPERATION, DATA ACQUISITION SYSTEMS, MICROSCOPES, ATOMIC FORCE MICROSCOPY
Record Number:CaltechAUTHORS:CLArsi92
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:CLArsi92
Alternative URL:http://dx.doi.org/10.1063/1.1143728
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10728
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:05 Jun 2008
Last Modified:26 Dec 2012 10:04

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